BACTERIOLOGICAL AND SEROLOGICAL MONITORING OF PARATHYPHOID INFECTION ON BROILER FARMS

Abstract

Salmonellosis causes significant health and economic problems in poultry industry, but it may also occur in extensive poultry production with higher or lower prevalence. Since salmonellosis is a zoonosis, it plays an important place among other major pathogens in poultry. The most important Salmonellae, present both in animals and humans, are Salmonella enteritidis i Salmonella  typhimurium. The aim of this research was to determine if there is a correlation between positive bacteriology and serology examinations carried out by ELISA test immediately after the slaughter. From the obtained results it may be concluded that there is a correlation between positive bacteriologcial findings and serological examination. Serological monitoring successfully detected infected flocks even when bacteriological findings were negative. A possibility of transmission from the parental flock to broiler chickens, as well as spreading the infection within the broiler flock, is considerably higher in non-vaccinated comparing to the vaccinated flocks.